Bobbin stripper



Dec. 17, 1929. R L I 1,740,128 I BOBBIN STRIPPER Filed Nov. 15, 1928 6Sheets-Sheet l BOBBIN STRIPPER Filed Nov. 15, 1928 6 Sheets- Sheet .2

' @MDF 22 5 Dec. 17, 1929.

E; A. TgRRELL BOBBIN sm'axrr'sn Filed Nov." 15, 1928 (-3 Sheets-Sheet. 4

Inventor:

Aty.

Dec. 17, 1929. E. A. TERRELL BOBBIN STRIPPER Fi O 15, 1928 GSheets-Sheethz I l NAN NRN 6 She ets-Sheet E. A. TERRELL BOBBIN STRIPPER Filed Nov.15, 1928 Dec. 17, 1929.

Patented Dec. 17, 1929 UNITED STATES PATENT OFFICE BOBBIN STRIPPERApplication filed November 15, 1928.

The invention has relation to machines of the class used in the textileindustry for the purpose of stripping so-called feeler-waste, i. e.,residues of weft or filling, from bobbins that have been expelled fromthe working shuttle of an automatic weft-replenishing loom in theperformance of bobbin-changing operations brought about under thecontrol of a socalled weft or filling-feeler. More particularly, itrelates to bobbin-stripping machines of the type having blades or thelike by which the residue of weft or filling remaining on an expelledbobbin is removed from the bobbin-barrel by a scraping action takingplace lengthwise along the bobbin-barrel.

The invention comprises improvements conjoined with an inclined guidewayor chute along which bobbins requiring to be stripped pass on their wayfrom a supply-hopper to the stripping devices; novel means at the bottomof said inclined bobbin guideway or chute for supporting a bobbin inproper relations with respect to the stripper-devices; and

for delivering the bobbin to the stripper-devices and cooperatingbobbin-pusher and bobbin-puller elements including novel and improvedfeatures.

The accompanying drawings illustrate the features of the inventionapplied in a bobbin stripping machine of the type aforesaid embodyingcertain of the general principles of the machines of U. S. LettersPatent for bobbin stripper, No. 1, 349,448, granted August 10, 1920,upon application of G. B. Bahan & A. St. Onge; and of U. S. LettersPatent for bobbin strippers, No. 1,514,924, granted November 11, 1924,upon application of George J. Pfeiffer and No. 1,515,880, grantedNovember 18, 1924 upon application of said Pfeilfer. I

In the drawings,

Fig. 1 is a view of the said machine in side elevation with the bobbinguideway or chute Serial No. 319,537.

omitted, this being shown separately in Figs. 4, 5 and 6.

Fig. 2 is a plan view of the parts which are shown in Fig. 1.

Fig. 3 is a side view of the machine looking at the side thereofopposite that which is shown in Fig. 1, and with the bobbin guideway orchute in place upon the machine.

Fig. 4 is a view in Side elevation of the bobbin guideway or chutedetached, on a larger scale than Figs. 1 to 8, and with a portion of thelength of the horizontally extending part of the guideway or chuteomitted.

Fig. 5 is a view of the parts which are shown in Fig.4, looking at thesame from the right-hand side in Fig. 4.

Fig. 6 is a view in vertical section in the plane of line 66 of Fig. 4.

Fig. 7 is a plan view on a considerably enlarged scale of about half ofthe machine, including the end thereof at which are located the bobbinguideway or chute and the pushhead by means of which a bobbin engagedthereby is pushed partway through between the stripper-blades. Thebobbin guideway or chute is omitted.

Fig. 8 is a plan view on the same relatively enlarged scale showing theopposite end of the machine. Fig. 9 is a view in side elevation of thegripper-j aw cross-head, this view being on a still larger scale.

Fig. 10 is a plan view of the said gripperjaw cross-head.

Fig. 11 is a plan view of the said gripper- -jaw cross-head with one ofthe cover-pieces of Fig. 12, with the parts in their proper relativepositions, the parts being viewed from the side opposite that shown inFigs. 9 and 12.

Fig. 14 is a view showing the gripper-jaw cross-head in vertical sectionin a plane located at midwidth of the gripper-jaw crosshead.

Having reference to the drawings,-

The machine shown in the drawings has a frame constructed with a bed 1comprising two side-members, indicated in Figs. 2, 7, 8, having aspaced-apart parallel relation, with such bed supported upon legs 2, 2.Above this bed is disposed in practice the bobbinchute or guideway, 3,4, which is shown in Fig. 3 in place upon the machine, and separately inFigs. 4, 5, 6, and which receives the bobbins that are supplied to themachine for the purpose of being operated upon, and conducts them towardthe stripping point in the machine. In practice, the bobbin-chute orguideway is so contrived and so disposed in the machine that a bobbinplaced therein will be conducted to the said stripping point and, afterhaving been given a position in which its length extends horizontallylengthwise of the machine, will be deposited between the two opposingsets of stripperblades 5, 5, and 6, 6, Fig. 7, which preferablyconstitute the stripper-devices, with the rings on its head resting uponbobbin-rests 7, 7, at the front side of the stripper-blades. Thedelivery-end of the bobbin-chute or guideway positions the bobbin sothat when deposited between the two sets of stripper-blades, with itshead in contact with bobbin-rests 7, 7, its tip end will be presented inreadiness for being acted against by the traveling pushhead 8, so thatthe latter by a movement toward the front end of the machine may performits function of pushing the bobbin lengthwise, head-end foremost, partway through between the stripper-blades, to thereby cause the waste yarnthat is on the bobbin to be moved by the stripper-blades from its normalposition adjoining the bobbin-head to a portion of the bobbin-barrelnear the tip thereof. The extent of the endwise movement of the bobbinproduced by this action of the push-head is such as to carry thebobbin-head into position to be grasped by the ripper-jaws 9, 9, Figs. 8to 11, 13, 14, mounted on traveling pull-head 10, so that by forwardtravel of the said pullhead, the remainder of the length of the bobbinmay be drawn through between the gripper-blades, whereby to complete theremoval of the waste yarn from the bobbin-barrel, over the tip endthereof.

The bobbin-chute or guideway, comprises the horizontally extendingportion 3 in which the bobbins carrying waste are deposited, and alongwhich they are pushed by hand toward the stripping mechanism, and theinclined arc-shaped portion 4 down which the bobbins slide under theinfluence of gravity for delivery to the said mechanism. The saidbobbin-chute or guideway is composed mainly of two cheek-plates 31, 31,and two chute-castings 32, 32, to which the said cheekplates areattached. The said chute-castings serve as feet for the bobbin-chute orguideway. They are attached to the top surfaces of the oppositeside-portions of bed 1, so that the bobbin-chute or guideway surmountsthe push-head and its actuating mechanism, with the portion 3 of thebobbin-chute or guideway extending rearwardly as in Fig. 3. Thechute-rails 33, 33, attached to the upper edges of the cheek-plates 31,31, at the inner faces of the latter, are spaced apart just suflicientlyto permit the barrel of a bobbin to enter between them, but notsuthciently to admit the bobbin-head. A bobbin dropped into the portion3 of the bobbin-chute or guideway will be supported by its head restingupon the two chute-rails, with its barrel hanging down between the twocheek-plates. As the bobbin, when advanced by the attendant upon themachine, moves along toward the stripper-mechanism the bobbin-head willslide along the chute-rails and then pass by gravity down the arc-shapedportion of the bobbin-chute or guideway to the lower end of sucharc-shaped portion. Between the cheek plates and below the chute-rails33, 33, are located bobbin guide-strips 34, 34, which are spaced apartjust sufficiently to admit be tween them the small part of abobbin-barrel near its tip. These guide-strips determine the position ofthe bobbin-tip and barrel transversely, and prevent it from assuming aposition inclined to one side or the other. They serve also to hold thebarrels of successive bobbins in line with one another, and to preventone from lapping past another.

As one feature of invention I employ a segmental rack 35, Figs. 4 and 6,within the inclined arc-shaped portion 4 of the bobbinchute or guideway.This segmental rack 35 is located below the guide-strips 34, 34, withthe convex line of its teeth paralleling the chute-rails 33, 33. Thesaid line of teeth is located at a distance from the ehute-rails alittle less than the length of the bobbins which are operated upon, sothat when a bobbin begins to descend the said arc-shaped portion of thebobbin-chute or guideway, with the bobbinhead in engagement with thechute-rails, the bobbin-tip will encounter the first teeth of the rack,with the effect of detaining the bobbin-tip and thereby tilting thebobbin forward, so that the bobbin-head shall be in the lead. of thebobbin around within the arc-shaped portion of the bobbin-chute orguideway the bobbin-tip will drag over the succession of rack-teeth,ensuring progressive tilting of the bobbin until, as the bobbin arrivesat the In the continued movement lowerend of the arc-shaped portion 4,the bobbin extends horizontally, withthe bobbin length extendinglengthwise of the machine.

The rack 35 has formed on its front edge, below the lowermost tooth ofthe segmental series of teeth, a narrow guiding surface 36, Figs. 4 and6, inclining forward slightly toward its bottom end. The said surfaceconstitutes a guide down which the tip-end of a bobbin slips as thebobbin descends below the lower end of the arc-shaped portion of thebobbin-chute or guideway. It constitutes also one element of means forposition ing the bobbin endwise in proper relation to thestripper-devices just prior to the entry of the bobbin between theopposing sets of stripper-blades.

A segmental guard 11 which overlies the convexity of the inclinedarc-shaped portion of the bobbin-chute or uideway, and parallels suchconvexity, at a distance therefrom corresponding with the size of theheads of the bobbins operated upon, serves as an external guide for thebobbin-heads by which the bobbins are prevented from outward displacement during their passage down the said arc-shaped portion. Itcooperates with the chute-rails 33, 33, in ensuring that at thedelivery-end of the said arc-shaped portion the bobbin shall bepositioned so that in being discharged into position to be acted upon bythe stripper-devices the bobbin-head shall come to rest upon the rests7, 7 Fig. 7, adjacent the stripper-blades, with the portion of thebobbin that adjoins the shoulder of the head presented properly to theacting ends of the strippenblades, and with the tipend of the bobbin inproper relation to the bobbin-pushing surface 81, Fig. 7 of thepush-head 8.

I provide means whereby a bobbin which has arrived at the lower end ofthe arc-shaped portion of the bobbin-chute or guideway is detained at aslight elevation relative to the stripper-devices and push-head, untilthe re turn of the push-head to starting position has carried the saidbobbin-pushing surface 81 of the push-head beyond the tip-end of thebobbin, in order that when the bobbin makes a further drop the saidtip-end may pass down in front of the said pushing surface 81 and theadjoining portion of the bobbinbarrel may land in the concavity 82 ofthe push-head, such concavity constituting a bobbin-tip seat. The saidmeans comprises in the illustrated machine a bobbin-tip cradle, and abobbin-head detent. The said cradle is constituted by a pair of fingers12, 12, Fig. 6, fixedly connected with small rockshafts 121. 121, whichare mounted in bearings provided in connection with the lower portion ofthe rack-piece. Each of these rockshafts has applied thereto a spring122, Fig. 4, whereby the rcckshafts and cradlefingers are controlled soas to keep the cradlefingers normally in positions in which they extendhorizontally toward each other, as in Fig. 6, in readiness to receiveand sustain the tip-end of a bobbin as it descends from the delivery-endof the bobbin-chute or guideway. The said bobbin-head detent isconstituted by a lip 13, Fig. 4, upon the lower end of the segmentalguard 11. The said lip is curved toward the tip-end guiding surface 36of the segmental rack-piece, and it acts with elastic pressure againstthe extreme end of the head of a bobbin so as to keep the extremetip-end of the bobbin in engagement with surface 36. Thus theelastically-acting curved lip serves to uphold the head-end while thecradle upholds the tip. The said elastic pressure may be produced byproviding the curved lip 13 upon a flexible elastic piece 131 attachedto the lower end of the se mental guard 11, or upon a spring-controlledpiece hinged to the said guard, or, it may be secured through mountingthe segmental guard by means of a pivotal connecticn at 111, Fig. 4,between the upper end of the guard and a bracket 112 attached to one ofthe chute-stands 32, and through connectingto the guard a contractingspiral spring 113 acting to hold the guard normally in a predeterminedposition suitable for securing the results aforesaid through coactionwith the end of the head of a bobbin. In the present instance thesegmental guard is held from displacement sidewise by means of aguide-arm 114 attached thereto and extending rearward alongside one ofthe chutestands 32, under a guide 115 attached to such chute-stand. Thenormal position of the guard radially of the arc-shaped portion of thebobbin-chute or guide is fixed, with capacity for adjustment, by meansof an adj ustmentscrew 116 carried by guide-arm 114 and engaging with asurface on guide 115. The elastically-acting curved lip constitutes asecond element of means whereby the bobbin is positioned endwise inproper relation to the stripper-devices. In virtue of the guard 11 beinghinged at 111 at its upper end, as described, it is capable of yieldingso as to obviate breakage of parts in case through the action of thepush-head in pushing a bobbin through between the sets of stripperbladessuch bobbin should be driven endwise head-end foremost, against thedetent 13. Thereby injury to the bobbin is avoided.

I provide means whereby at the proper time a bobbin that is upheld atthe lower end of the arc-shaped portion 4 of the bobbinchute orguideway, by the cradle and the elastically-acting lip aforesaid, isdisengaged from said cradle and lip so that it is rendered free to dropinto place in relation to the stripper-devices and the push-head. Suchmeans in the illustrated machine is constituted by a plunger 14, Figs. 4and 5, oc-

til

cupying a guide-bearing at 15 in connection with a bracket 141 attachedto one of the chute-stands 32, the guide-bearing and the plunger beinglocated a little below the mouth of the bobbin-chute or guideway. Thesaid plunger is arranged to move longitudinally within the saidguide-bearing in directions at right-angles with the length of a bobbinsupported by the cradle and lip. The outer end of the plunger is notchedfor engagement with a pin 143, Fig. 7 carried by an arm 142, Figs. 2, 3,and 7, in connection with the rockshaft 16 shown in such views at oneside of the machine. The inner end of the plunger is beveled at itsunder side so that when the rockshaft 16 is rocked in the direction tocause the plunger to move crosswise with relation to the mouth of thebobbin-chute or guideway, the wedge-shaped end acts to force the saidbobbin downward, thereby disengaging it from the cradle and curved lipand causing it to drop as mentioned. hen the rockshaft is rockedreversely the plunger is withdrawn so as to permit the next succeedingbobbin in the bobbin-chute or guideway to drop down upon the cradle andcurved lip, in readiness to be disengaged and dropped through the actionthe bevel-ended plunger in its next working stroke.

As shown best in Figs. 2 and 7. the two sets of stripper-blades 5, 6,and 5, 6, extend transversely of the machine within guides proj ectingfrom the two side-portions of the bed 1. The working ends of the bladesof one set are spaced apart from those of the other set sufiiciently toadmit a bobbin between them. The two bobbin-rests 7, 7, are carried bythe said guides, with each of the said bobbinrests alongside the workingends of the blades of the corresponding set, the pair of bobbinrestsbeing located forward of the stripperblades so that the head of adescending bobbin may land upon the two bobbin-rests as the portion ofthe bobbin that adjoins the head passes down between the two sets ofstripperblades.

The stripper-blades are actuated, to close their working ends inwardagainst opposite sides of a bobbin that has been dropped between the twosets, and subsequently to separate the two sets more widely for thereception between them of the next succeeding bobbin, by means of levers51, 61, which are combined operatively with the two rockshafts 16 and161 extending alongside the other sides of the bed 1 and mounted inbearings, as 162, 162. attached to the bed. For the purpose of enablingthe said rockshafts to be actuated they are provided with arms 163, 163,engaging grooved cams 164, 164. upon the shaft 165 extending across themachine at the headend thereof. In practice the construction, &c.,providing for yielding action in closing the two sets of stripper-bladestogether against the opposite sides of a bobbin will be, preferably, asin my application for U. S. patent for improvement in bobbinstrippersfiled November 14, 1928, Serial No. 319,284.

Following the action of the wedge-ended plunger 14 in dropping a bobbinfrom a position at the delivery-mouth of the bobbinchute or guidewayinto stripping position with the bobbin-head resting upon the pair ofbobbin-rests 7, 7, with the adjoining portion of the bobbin between thetwo sets of stripper-blades and the bobbin-tip resting in the tip seat82 of the push-head 8, and after the ensuing closing of the working endsof the stripper-blades against the bobbin, the pushhead is moved in thedirection from the head-end of the machine toward the foot-end thereofso as to push the bobbin lengthwise part-way through between thestripperblades. This results in the waste yarn being stripped by meansof the said blades from the portion of the bobbinlength which thereby ispushed past the stripper-blades. Simultaneously with this movement ofthe pushhead 8 the pull-head 10 is advanced in the reverse direction,namely in the direction from the foot of the machine toward thestripper-blades, so as to meet the advancing bobbin-head and present thegripper-jaws for engagement therewith. As soon as the bobbin-head isfairly within the engaging portions of the grippenjaws the latter areclosed upon the bobbin-head, grasping the latter. At this time themovements of the push-head and pull-head are reversed. The push-headreturns empty to starting position, and the pull-head returns to thefoot of the machine, carrying the bobbin with it, so as to effectcomplete withdrawal of the bobbin through between the stripper-jaws,thereby completing the clearing of the waste yarn from thebobbin-barrel. Y

The push-head 8 and pull-head 10 are supported by guides 82, 82, and102, 102, in connection with the opposite side-portions of the bed 1,and they respectively are connected by pitmen 83 and 103 to cranks 84and 104 in connection with, respectively, the transverse shaft 165 atthe head-end of the machine, and the transverse shaft 105 at the footendof the machine. Through these actuating connections the push-head andpull-head are actuated simultanenously in opposite directions withrespect to each other, so that the pushhead and pull-head simultaneouslyapproach the stripper blades in opposite directions, and simultaneouslyrecede therefrom in opposite directions. I

The bobbin-pushing surface 81 with which the push-head is furnished mayadvantageously be constituted by a block of lead or other material notlikely to bruise or otherwise injure the bobbin-tips against which itacts, and may be detachably attached to the push-head, for example bymeans of screws 86, as shown, to enable it to be replaced whenreplacement is found to be advisable.

Opening and closing movements of the gripper-jaws 9, 9, are provided forby mounting them upon vertical pivots 91, 91, Figs. 8, 9, 10, 11, 13, onthe pull-head 10, so as to have capacity to swing horizontally towardand from each other. For the actuation of i the gripper-jaws so as toproduce such moveof the rack-bar within the guide 93 on the pull-headwill occasion swinging movement of the gripper-j aws around their pivots91, 91.

I provide stops 17, 17, Figs. 12 and 13, for the purpose of producingendwise shift of the rack-bar relative to the pull-head, first in onedirection as the pull-head nears the completion of its stroke away fromthe stripperblades, so as to open the gripper-jaws to release a strippedbobbin that is clasped thereby, and also in order to prepare forengagement of the gripper-jaws with a succeeding bobbin, and afterwardsin the opposite direction as the pull-head completes its stroke towardthe stripper-blades, so as to close the gripper-jaws upon the head of abobbin that has been advanced part-way through the stripper-blades bythe pushing action of the push-head. The said stops are carried by abracket 18 which is mounted upon bed 1 and extends over the pull-head. Apost 97 rising from the rack-bar 92 encounters the said stops i in thereciprocating movements of the pullhead. The stops extend down from theoverarching portion of bracket 18 into the path of the said post. Duringmovement of the pull-head in a given direction, encounter of T the post97 with a stop 17 arrests the rackbar, while the pull-head continues ashort distance farther, the result of which is to occasion'relativedisplacement between rackbar and pull-head whereby the gripper-jaws areactuated to open, -or close, as the case may be. In this manner, thegripper-j aws are caused to open as the pull-head approaches the limitof its movement away from the stripper-blades, and are caused to closeas the pull-head in its return movement nears the stripper-blades.

I provide means for locking the gripperjaws in their closed condition,as soon as they have closed upon a bobbin-head at the end of theirmovement toward the stripping blades,

and for keeping them locked during the movement of the pull-head awayfrom the stripper-blades. The lock in the present instance isconstituted, essentially, by a bell-crank 19, shown best in Fig. 14,occupying a vertical slot in the post 97 and mounted upon a horizontalpivot 191 in connection with the said post, so that the lockingbell-crank is adapted to swing in a vertical plane. One arm of thebell-crank extends upward from the pivot, while the other arm thereofextends horizontally toward the stripper-blades and, as shown best inFig. 14, under a bar 192 extending across from one j a-w-pivot 91 to theother as shown best in Fig. 10. An expanding spiral spring 20, Figs. 13and 14, acts against the bell-crank with a tendency to rock the latterso as to raise the extremity of the horizontal arm thereof against theunderside of the said bar 192 and also cause the back of the upstandingarm of the bell-crank to project as shown at the front side of the post97. The said extremity of the horizontal arm is notched to receive thecrossbar 192 and provide a shoulder which, when the rack-bar occupiesthe advanced position relative to the push-head in which it is shown inFig. 14, will, through engagement with the front of the bar, hold therack-bar forward and the gripper-jaws closed, as well as to provide atoe which through engagement with the underside of the crossbar willlimit the rise of such arm. Thereby the locking of the gripper-jaws in aclosed condition in engagement with a bobbin-head is accomplished. Theunlocking of the gripper-jaws at the extreme limit of thebobbin-withdrawing move ment of the pull-head, to permit relativemovement between the pull-head and the rack-bar to occasion the openingof the gripper-jaws, results from contact of the projecting back of theupstanding arm of the be1l-crank with the appropriate stop 17, wherebythe bell-crank is rocked upon I its pivot so as to depress itshorizontal arm and thereby disengage the notched end of such arm fromthe cross-bar. As now the post 97 engages with the said stop the latterholds the rack-bar stationary while the pull-head completes the shortremainder of its move ment. The resulting relative movement of thepull-head with respect to the rack-bar will cause the cross-bar to passover the horizontal arm of the bell-crank, to an intermediate positionbetween its notch and the fulcrum 191 of the bell-crank. The saidrelative movement will result in the opening of the gripper-j aws andthey will remain open until in the movement of the pull-head toward thestripper-blades the post 97 engages with the other stop 17 The effect ofsuch engagement is to arrest the rack-bar, producing the relative shiftwhich occasions the opening of the jaws 9, 9. As soon as this relativeshift has disposed the cross-bar 192 in position to oo- 1 side of thecross-bar and the shoulder adjoining said toe up alongside thecross-bar, thereby locking the jaws in open condition. To ensure againstany accidental shift in the position of the rack-bar with reference idto the pull-head during this movement, I

provide a yielding detent constituted by a all-shaped plunger 98, Fig. lt, acted upon by an expanding spiral spring 981 and adapted to enter arecess 982 in the underside of the rack-bar.

In order to enable the stops 17 17, to yield slightly when acted againstby the post 97, each thereof is carried by a plate 171 mounted on thetop of the bracket 18, the blocks on which the stops are formed workingin slots 173, 173, in the top of the said bracket and being engaged withthe plates 171, 171, by bolts 172, 172. A longitudinally extending bolt17 4: engaged with an upstanding portion of one of the plates 171extends through a hole in an upstanding portion in the other of the saidplates and receives beyond its stem upon the latter upstanding portionan expanding spiral spring 175 which is confined between the said latterupstanding portion and a washer and nut 176 upon the screwthreadedextremity of the bolt. When either stop is acted against by the saidpost, the spring 175 yields. The minimum distance between the two stopsis determined by means of a collar 177 upon the stem of the bolt 17 1between the two upstanding portions of the plates 171, 171.

Provision is made for adjustment of the rack-segment 35 of thearc-shaped portion of the bobbin-chute or guideway to suit differentlengths of bobbins. Thus the said racksegment is mounted in connectionwith one of the chute-castings 32 with capacity for being set atdifferent distances horizontally from the curved portions of thechute-rails 33, 33. In the present instance, the rack-segment issupported in connection with the said chute-casting by means of alateral flange 351, projecting therefrom into a horizontally extendingslot 352 in the chute-casting, a bolt 353 being employed to fix therack-segment in the required position. By shifting the rack-segmenteither forward or rearward as permitted by the slot, the acting edge ofthe rack-segment may be positioned at a distance from the curvedportions of the chute-rails 33, 33, suitably to the length of bobbinoperated upon, and with the guide-surface 36 spaced from the lower endof the segmentguard 11 at a distance corresponding to the said length.

What is claimed as the invention is:

1. In a bobbin-stripper machine, the combination with a bobbin-stripperdevice, and

means for producing relative movement between said device and a bobbinpresented thereto to be stripped, of a bobbin-chute having an arc-shapeddelivery portion from which a bobbin to be stripped is delivered in ahorizontally extended position with the bobbin-length extendinglengthwise of the direction of said movement, and a segmental rack inconnection with said arc-shaped portion having its teeth in the path ofthe bobbin-tip and adapted to act to progressively overturn a descendingbobbin into the said horizontally extended position.

2. In a bobbin-stripper machine, the combination with an inclinedbobbin-chute, of a tip-cradle at the discharging end of said chutecomprising opposite rocking cradlemembers, and means for applyingspringtension for yieldingly holding said members in bobbin-receivingposition.

3. In a machine for operating upon bobbins, the combination with areciprocating head, of a pair of gripper-jaws combined therewith, a barmovablelongitudinally upon the said head and engaging with the saidgripper-jaws to move the latter relative to each other when the bar ismoved longitudinally, and stops in the path of the bar by which it isshifted relative to the head as the latter reciprocates.

fl:- In a bobbin-handling machine, the combination with a reciprocatinghead, of a pair of gripper-jaws pivotally connected to said head, alongitudinally movable bar engaging with said gripper-jaws, and stops inthe path of said bar to shift it relative to the head to open and closethe gripper-jaws.

5. In a bobbin-stripper machine, the combination with a reciprocatingpull-head, of a pair of gripper-jaws pivotally connected to said head, alongitudinally movable bar engaging with said gripper-jaws, stops in thepath of said bar to shift it relative to the head to open and close thegripper-jaws, and a lock which retains the gripper-jaws closed duringthe bobbin-pulling movement and releases the same at the conclusion ofsuch movement.

6. In a bobbin-stripper machine, the combination with a. pull-head, of apair of gripper-j aws pivoted thereto, a longitudinally movable bar onsaid head engaging with said gripper-jaws, stops which act throughengagement with a projection from said bar to produce relative movementbetween the bar and the pull-head, and a look by which said bar islocked with the gripper-jaws closed during the bobbin-pulling movement,said lock disengaged through disengagement with one of the said stops.

7. In a bobbin-stripper machine, the combination according to claim 1characterized by a segmental rack which is adjustable to suit differentlengths of bobbins.

8. In a bobbin-stripper machine, the combination according to claim 3characterized by yielding stops for the bar.

9. In a bobbin-stripper machine, the combination-according to claim 4characterized by longitudinally movable spring-controlled yielding stopsfor the bar.

10. In a bobbin-stripper machine, the co1nbination with a bobbinstripperdevice, and means for producing relative movement between said deviceand a bobbin presented thereto to be stripped, of a bobbin-chute havingan inclined delivery portion, a guide-surface for the end of the tip ofa bobbin, a detent which engages with the extremity of the bobbin-headand positions the bobbin lengthwise with its tip-end against the saidguidesurface, and means for discharging the b0bbin from saidguide-surface and detent to the bobbin-stripper device.

11. In a bobbin-stripper machine, the combination with a bobbin-stripperdevice, means for producing relative movement between such device and abobbin delivered thereto, in a direction lengthwise of the bobbin, andan inclined bobbin-chute having a guide-surface for the end of the tipof a bobbin, of a tipcradle, a head-detent at the delivery end of suchchute which positions the bobbin lengthwise with its tip-end against thesaid guidesurface, and means for discharging a bobbin from the saidtip-cradle and head-detent to the bobbin-stripper device.

12. In a bobbin-stripper machine, the combination with a bobbin-stripperdevice, a bobbin-head rest at one side thereof, a pushhead at the otherside thereof adapted to push a bobbin endwise relative to the saidbobbinstripper device through engagement with the bobbin tip, aninclined bobbin-chute having a guide-surface for the end of the tip of abobbin, yielding bobbin-tip detents at the delivery-end of saidbobbin-chute, a head-detent at said delivery-end which positions thebobbin lengthwise with the end of its tip against the saidguide-surface, and means for forcing a bobbin past the said detents topresent its head to the bobbin-head rest and its tip to the push-head.

13. In a. bobbin-stripper machine, the combination with abobbin-stripper device, a bobbin-head rest at one side thereof, apull-head at the same side with said bobbin-head rest, a push-head atthe other side of the bobbinstripper device adapted to push a bobbinendwise relative to the bobbin stripper device through engagement withthe bobbin-tip and thereby present the bobbin-head in position to beengaged by the pull-head, an inclined bobbin-chute, detents at thedelivery end of said bobbin-chute for the tip and head of a bobbin, andmeans for discharging positively a bobbin from said detents to presentits head to the bobbin-rest and its tip to the push-head.

14:. In a bobbin-stripper machine, the combination with stripper-blades,means for moving a bobbin endwise therethrough, and an inclinedbobbin-chute, of a guard covering said chute hinged at its upper end toa support therefor, and capable of yielding in case a bobbin should beforced thereagainst.

15. In a bobbin-stripper machine, the combination with a bobbin-stripperdevice, and an inclined bobbin-chute, of a tip-cradle and a head-detentat the delivery end of said chute, said head-detent operating toposition a bobbin lengthwise, and a reciprocating plunger having awedgeshaped acting portion which forces the bobbin from said tipcradleand head-detent to the bobbin-stripper device.

EDGAR A. TERRELL.

